I hate you so much. The angle and the power bar is so finely tuned, it is almost impossible make adjustments. On certain courses it doesn't matter that much, because there are slopes to rescues you. But if you're even 1 pixel of on other courses, the shot will go in a direction you did not want it to.
Still, it's really well executed and even for a game with so little mechanics I find it really addicting.
Good job, that just shows that even simple but tight and well thought through mechanics can make a game. Keep it up!